Thanks, is there a special program needed to edit the file? Cause I opened it up with Notepad++ and saw some text were in symbols so I don't want to accidently create a corrupted file.

Also is the resupply radius in your mod smaller than the capture zone radius? Cause I parked a couple of half tracks, and built a couple of sand bag walls on the edge of the capture zone and noticed they weren't resupplying unless they were really close to the flag itself.

NP, happens :).
If you want to change the Limits of Resupply max. Count per Gun you neeed to change this:
gamelogic.pak/properties -> resupply_generic.inc
If i have it in the Mod its under *modname*/ressource/properties

Sorry I was incorrect, I just retested and it seems that ammo reloads are capped at a low amount. For instance a half track with a .50 cal starts out with 1100 ammo but has a max resupply / reload of only 300 rounds. When I first tested the mod I only shot 100 rounds and thought the mod wasn't working for the half track. But when I threw away all the ammo I saw the mod was working.

@Numenor
You mean the MG Guns of Cars not getting reloaded ?